Related Clues:

• Morse bits
• E's, I's and S's, in Morse code
• Code signals
• Some telegraphic signals
• Dahs' counterparts
• Morse code sounds
• Morse code taps
• Morse clicks
• Morse sounds
• Morse-code sounds
• Telegraph clicks
• Some Morse code clicks
• Dahs' partners
• A Morse 'I' consists of two
• Some Morse taps